Hi /diy/nos! Listen, not much of an electro guy. Yet. I'm into chemistry and I'm playing with electrolisys reactions, or at least i want to. I need SOMETHING that will convert my AC current in DC current with known voltage and current. For the little i know, a recifier is used to convert AC to DC, yet current and voltage are variables that i can't understand how to control in this process. So, i ask to you: Can such a thing as a rectifier-voltage-current-controler-o-tron be built? If yes, which is it's real name for googling purposes? Can... Comment too long. Click here to view the full text.
>>993085 But it's worth my money, ATM my finances are exactly -$100.000 at my local currency, yet I have an spared power supply and a box full of old electronic stuff that i've gathered throug years. I can read resistors and capacitors values and i can solder almost decently, building this is worth, specially if it can allow me to gather experimental data for some reactions that i need (complex salts system that can't be fully predicted by theory), but as you say and http://www.finishing.com/324/39.shtml confirms,... Comment too long. Click here to view the full text.
>>992991 Because I like my job and I have realistic goals for my life that keep things in perspective. I also view suicide as "an easy way out". We all die one day and once you realize the Buddhist philosophy of 'life is suffering', nothing phases you (at least nothing i have experienced so far) to the point where death is the only option.
Hi /diy/ I asked this question on /g/ but they sent me here because they thought y'all might be more knowledgeable on the subject I'm a frequent of /k/ wondering about comms and how they work. I was thinking about getting a short band radio to communicate with some buddies while innawoods to "train" But I realized I know nothing about them and wouldn't know the first thing about buying one- SO
How does a short band radio work? Would a CB suffice for a guerrilla force attempting to operate against a much larger/well equipped military? Is... Comment too long. Click here to view the full text.
There are commercial off the shelf items you can buy with encryption. Look for digital radios, analog is not encryptable unless you cypher it somehow.
Of course this being /diy/ I have to suggest a /diy/ solution which would be software defined radio. Can do analog or digital on the fly and you can choose your own encryption or modulation. Not really something for a casual user but there are some pre builts that probably have enough documentation for someone to use
>>989158 1. Get in with your local hams. Yes, you have local hams, and they can tell you all about the radio netwrok that exists around your locality and how not to inadvertantly infringe upon it, which could result in fines. Get your ham operator licence. 2. If you invest in something with off the shelf encryption, ensure that the encryption is actually secure/programmable, not something that can be googled or is found in the equipment's manual.
>How does a short band radio work? By short band, do you mean UHF or VHF or what? >Would a CB suffice for a guerrilla force attempting to operate against a much larger/well equipped military? You could communicate with each other, but everybody would be able to hear you >Is it possible/easy to encrypt a CB to prevent unwanted listeners? It's possible, but I'm pretty sure it's illegal, although the FCC doesn't give a flying fuck about what happens on CB... Comment too long. Click here to view the full text.
I'm interested in woodwork and have a few projects I would like to start in my home as practise to really get into it. I have experience with saw machines. I would like to make furniture and other small things. What machines and handtools are a complete must for starting my own hobby workshop in my garage? Also what are good brands? I already own a hand saw, every type of "bolt/screw turner" you can think of, hammers etc. Also the only machine I currently own is a sandpaper machine and a drilling machine(it's shit though and I need a replacement) Sorry... Comment too long. Click here to view the full text.
I'm making a project where I'll be using a lot of 3W LEDs, from various colours. As so, each colour have a different tension to be used. I will not buy a LED driver module, so I decided to build something similar to the pic related here. I was drawing mine, but I ran out of time.
Anyway, the question is: I want to adjust the brightness of all LEDs together, but every colour is under a different tension, controlled by an LM317 (or some similar, doesn't matter for the question).
Does a simple potentiometer before the regulators... Comment too long. Click here to view the full text.
>>999544 Seriously, did you even read the datasheet? The circuit for an lm317 current regulator contains the lm317 itself and a single potentiometer. Just adjust the potentiometer to adjust the current.
No, my dear friend. You are the one that didn't read what I said.
The potentiometer that you are referring to is the one to correct the tension of the output of the LM317. I am aware of it, and that is exactly why I am using these.
My question is, considering the LM317 adjusted to 2,6V, another one to 3,6V and other 3 to 4,1V, how could I control the intake current of all of them together, so all the LEDs are regulated together, from zero volts to the desired tension adjusted on the LM317.
I want to add chicken wire to the bottom of our garage side door to keep any animals out.
We are cleaning our garage and our side door that we are blocking with a shelf has a 3-4 inch gap on the bottom for safety (exhaust buildup, etc). We were given a roll of chicken wire and were told that we should attach it to the bottom of the door to keep any rats, possums, etc out.
But I'm in a bind as to how to do this because I'm a moron. Would I want to glue the wire to the door? Are there bolts to bolt it on? And would i just leave it hanging on the bottom,... Comment too long. Click here to view the full text.
>>999363 Use 1/4" hole Hardware Cloth wire not, chicken wire. Chicken wire is the worst shit ever and rusts out inside of two years. Use screws with large washers to install it. If you are drilling into metal, use self-tapping screws.
So I got this Briggs and Stratton 3.5HP engine with a vertical shaft from a lawnmower. I would use it for a project like a kart or drift trike but then my best option is to convert it to a horizontal shaft. As I don't have a lot of experience with fabricating, I'm looking for other ideas. The thing is, I can't get that thing off where the blade is supposed to be connected to. So I can't really use 45 degree gears.
What material/substance should I use to fill 4x7cm holes in the shed roof to ensure a nice airtightness when constructing an effective chimney flue? I will attach an illistration to help describe what I mean... I am talking about the gap caused when you place corrigated iron on top of a brick wall.
Also, any top tips about chimney flues? Aside from the obvious like making the chimney exit higher than the ceiling of the room/building by about 1/2 ft
>>999068 Did you recently buy the tin? I'd say go back and see if they have anything. Menards sells a foam strip that fits underneath the corrugations on their sheets. If not fiberglass insulation would probably be a good bet.
Also your thread will be around for days no need to bump
Ok so my good ol' recliner is showing its age. The Mechanics and fabric are fine as I do my best to keep them in nice working order and clean. However the foam rubber in the seat is drying out and is literally crumbling away because of the springs rubbing against it. I fear it may soon ware its way through the fabric.
I've come up with a solution of gluing cushion foam to some vinyl shower pan liner and then stuffing it over the springs. The liner should be strong enough to resist ware from the springs for a long time, but I don't know what type of glue... Comment too long. Click here to view the full text.
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